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UNITED sTATEs MACHINE Fon BORING Huss.

WILLIAM PATTERSON, or ooNsTANTiNE,` MICHIGAN.; ff j j Speccation `of Letters Patent No. 26,520, dated December 21(`)`,l1"815`9.``

To all whom 'it may concern: j

Be it known that I, )VILLIAM PATTERSON, of Constantine, in the county of St. Joseph and State `of Michigan, have invented cer`- tain new and useful Improvements in Machines for Boring Hubsof Taper and other Forms for the Reception of Boxes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in whichl Figure l represents an elevation of amachine embracing my improvements, and ap plied to a hub; Fig. 2 represents a longitudinal section of the machine as adjusted to bore tapering; Fig. 3 represents a similar section `of the machine as adjusted for cutting out the interior of the hub (after ithas been bored to receive the box or boxes) to out off the inner ends of the spokes, and prevent them from resting and pressing unequally on the box, or on the exposed part of the axle, when short boxes are used; Figli represents a plan of the machine; Fig. 5 represents in perspective an inverted view of that portion Vof the machine that contains the spring seat for j the swivel nut (detached from the cutter shaft) which allows the nut to yield, and with it, the cutter, when cutting shoulders in the hubforshort journal boxes to ft against; Fig. 6 represents inperspective a view of the inner sidezof the cir cular plate that carries the swivel nut, and acts against the spring shown in Fig. 5; Fig. 7 represents in perspective one of the sliding `ferrules for centering andfsecuring the hub; and the nut which controls the ferrule and clamps it whenset; detached from the screw shank which carries them. Fig.` 8 represents in perspective the slide for adjusting the deflection of the cutter shaft, by its connection with the spring bar.

My improvement relates to the manner of cutting the `shoulder on the interior of the hub, for short boxes7 in a .planel parallel to the end of the hub, while the cutter is` carried and fedby `an inclined screw shaft.,

My improvement further relates to the combination and arrangement of an adjustable spring bar, with the cutter shaft, and adjusting slide for the purpose of cutting out the interior of the hub to cut olf the ends of the spokes, and thereby prevent i them from resting and pressing unequally on the box; or from coming in contact with the exposed part ofgthe `"axle when the hubfisf j tted withshort boxes.` 1 if" Inthe drawing` A,and B, representf tj circular metallic boxes,l between` which ,the hub is centered and secured.` f Theyaregco nected together by ineansl of; `a screw `Shaft which carries tliecuttei" by whichitheint rior of the hub is cutto `the required j and form. One oflthese boxes A, denomi-i. Q nate .the adjusting boxg, the i other` B,`ltl`ie, j d yielding swivel-nut box.` The first of theseff boxes consists of a :ring having an aniiulan1 f seat (c) and shoulder,(lb)`asshowii in` 2 and 3. To this annu arl seat a` slottedfceiilf` ter disk C) is fitted so `aste revolve triily" and stea ily `within fthe ring-#having its center of motion coincident `with :th t` l the swivel nut. f f

The c enterdisk I(C) projectsbeyond ,t ,1

supportin ringa Siloentdistancejtolf a pulley c) "bywhichfthevcutter shaftf be driven by bandiw Thojoiiter .face of` disk is fitted withal? ide"(D1) `having j j (d) corresponding to that in the center disk," through both of `vvhieh,Uthe cutter"` shafti 180,. i passes, and ispattached ftojthe slide, byfa steel spring bar, tofbeheieafter, described@ The center diskiis ,held in its seat by two@` screws (c) passingjthroilghl the `fixed...iiingfu into an j annular j groove in j the icenter?.udisk"."` i The box `13,! hasfitfssidel adjacent` to `t hub closed (except anfopeniiig sufficient` the shaft to pass through) fbyajiixed pl the opposite side` isclosedfbya circularipl `fitted into ithehlboxagainst" i spring, which ,i tends; constantly to j j j, plate from `.the` Cuifenbut whic j is j, strained from bei "g pressed tout offth fx j by two screws, thejheads `gi)f `)s oh l overlap projections` from? `the plate f wh-` "i fit into grooves on theinteriorlof ,th whereby thel plate can `yield in the dire` of` the length of thecuttergshafnbutnca rotate with said shaft forI a 1piirlziose.to bek h hereafter described;` `"llhisjcirciilar3plate (f) 100` has a projection` (@Lon its` iniilerJsidewith@` an annular j opening i extending". through "the plate, into whicha nut"`() isfditted tlirjongh` which the screw shaft passes. .Thenuiiis` held in positionby two screws PYSmgl 19,5 through the projection (It) and intothejop posite sides `of the nut, on whichithefl i may rock to accommodate .the obliqiiit the shaft, as it revolves withthe cutter.

vided with radial shanks (E), (in 'this instance three) placed equidistant from each other, and have screw threads cut thereon as shown in Figs. 8 and 5. Each screw shank is furnished with a ferrule (F) so as to slide over and on the screw threads; and each ferrule is made with a projection (F) at its inner end of such shape as tojiit against the end and side of the hub when the latter is centered and clamped. Each ferrule has a nut (G) connected with it, and fitted to the threads of the screw shank. The nut (Gr) is connected to the outer endY of the ferrule by means of a stem (j). ex tending from the interior of the ferrule to the outer end of the nut and bent so as to embrace the end of said nut, and lock it to y the ferrule, as shown in Figs. 2 and 3, so

that the nut is free to turn, and its action on the screw, is not interrupted, while, by means of a longitudinal groove or channel (lc) in the shank, into which the stem ts, the ferrule is prevented from turning with the nut, but is free to be moved on the shank toward or from the hub, according as the nut is turned to the right or left, by the handles with which it is provided. By this arrangement it will be seen, that the hub holders can be managed with ease and facility in centering, clamping and unclamping the hub, as the turning of the nut controls and adjusts the movements of the clamping ferrules.

The slide (D) is carried by, and rotates with the center disk; and its adjustment is effected by means of a thumb screw (H) passing through a projection on the center disk, and has its end swiveled into a similar projection on the slide. The cutter shaft passes through the center disk and slide without being directly connected to either; this is for .a purpose to be presently described. The shaft however is indirectly connected to the slide (D) by means of a steel spring bar (I) attached to the shaft permanently at one end and byA a set screw (m) at the other. Its edges are beveled, and the opening in the slide through which it passes is of a corresponding shape as shown in Fig. 4, and the bar, is therefore free to move longitudinally with the shaft, as well as transversely with the slide, but it has no transverse adjustment in relation to the center of motion independent of the slide. j.

A portion ofthe cutter shaft has a screw thread (J)V cut upon it-the other part (J) being square in its cross section. At the junction of the screw with the square portion, the cutter (K) is screwed, by having its shank fitted Vinto a mortise so that its cutting edge may be adjusted nearer to, or farther from the center of the shaft and secured by a screw.

The screw (J) on the shaft is of a length greater than that of the hub and works into the threads of the center nut (2'), while the square portion of the shaft" passes through the center disk (C) and slide (D), and is of a length suiicient to allow the cutter to pass entirely through the hub.

A collar (L) is fitted to the shaft above the center disk so that it may be adjusted thereon and clamped by a set screw at the proper distance from the cutter, for the purpose of arresting the progress of the cutter, by coming in contact with the center disk. This collar is only used when the hub is to be tapered and formed with shoulders ,to

receive short boxes; and as'the cutter tracesY a spiral line corresponding to the screw thread, it is plain that the shoulder will be the counterpart of the screw, and the object of mounting the swivel nut in the yielding plate is to remedy this evilby terminating the shoulder in a plane. parallel with the end of the hub, so that the box may fit flush against the shoulder. An inspection of the drawings will show how this is accomplished. When the collar (L), by the progress of the cutter in the hub, comes in contact with the center disk, the longitudinal movement of the cutter will'cease, and thus determine the shoulder. At this point, in the operation, the shoulderr is left in a spiral line, and the screw shaft can feed the cutter no farther; therefore, by turning the of the hubthe screw shaft causing the Y compressed when the collar (L) is arrest- V ed,-thus by a simple and effectual arrangement of a xed stop and yielding center nut, I am enabled to feed the cutter by an inclined screw shaft, andrform a true shoulder Vduring theV operation and without'risk of stripping the threads from the shaft.

Having described the steel spring bar (I) and its attachment to the slide (D), I will now state the object of this arrangement. The hub is iitted'with the spokes, before it is bored to receive the box or boxes, and the ends of the spokes protrude through into the bore. When the hub is tapered from end to end, the spokes are cut ofi' flushvwith the interior of the hub,and when the box is secured in place, the wheel nished and used, the ends of the spokes will work through and press unequally on the box, which is Very objectionable. When short boxes are used, the ends ofthe spokes Vwill often work through and come in contact with the ex` posed part of the axle. It is the object of one branch of my improvements to remedy these diiiiculties by cutting the interior of the hub concave, after it has been bored for the box, as will be seen b reference to Fig. 3. An adjusting screw n) passes through the shaft and is swiveled into the steel bar (I) near the middle of its length. Asthe shaft is not connected with the slide, it is evident that by turning the screw (n) to the right the spring bar (I) will bend, so as to allow the shaft to be separated from it-the opening in the slide being for that purpose. Now as the spring bar isxed in relation to the slide, the threads of the screw i acting on the shaft, will consequently cause the shaft to be deflected farther fromthe center of motion, thereby giving the required bend to the bar outward at its middle, while ends are attachedtothe shaft. The spring bar thus adjusted, acts as a guide to the cutter which projects `from the opposite side of the shaft, causing it to trace a line the reverse of the bend of thespring` bar, thus boring the interior of the hub concave and cutting off the ends of the spokes a sufficient distance to prevent them ever resting on or coming in contact with the box, or

the exposed part of the axle. The inner end.

of the bar may also be adjusted in connection with the middle screw; if necessary, to give the spring bar the shape to produce the required concavity in the hub.

The machine is mounted upon a suitable frame or bench; and the cutter shaft may be operated by a belt passing around the pulley i of the center disk, or by means of a crank hanfdle on the end of the square part ofthe sha t.

I deemit unnecessaryfto `describemore d fully the operation of the machine,s as-it will j U be sufficiently understood `by reference to v In cuttin and tapering gthez hub forthe the drawings and foregoingdescription.`

` 14:5` reception o short boxes, it Willbe necessary f to reverse the hub to cut` each `end tothe proper depth and diameterybutjin boring j i the taper from end to end ofthe hub, itisd` 1 j j. 1501" as to cut the interior ofthee hub zof ithe 1 proper taper and diameter to receive the; i p i only necessary to make; such adjustments box; and by the aid of ascale onlthe centen@ disk and a `pointeronthe slide, these `1 ad-f` v1553 justments can be easily determined" by any competent mechanic. f 1 i .1 Having described clairnl. In combinationzwith the swivel nutklij@ i f having a yielding or spring seat(M),the j adjustable collar (L) and cutter shaftyfor 1 l j Vmy. improvements,` I1

causing the cutter tojform a shoulder in` the 1 y hub in a plane parallel to theend of the hub, t

clined screw shaft, as hereindescribed.

screws (m n) of boring out the interior-"of the hubjand cutting off the ends ofthe spokes and there# by prevent the latter from resting andpress-m .1 f

ing unequally on the box, `orontheexposed1` part of the axle, as herein described.

In testimony whereof, I" have herelinfo subscribed my name. i x

Witnesses:

L. S. HULL, p ISAAC W. BRADLEY.

WILLIAM PATTERSON. 3 y j 3 j i 

